Power suplly question to see if it fits my rigs specs

I own a HP Pavillion a1600n with a PNY Nvidia GEfore7900 GS and 1 gig ram... i have to know if the following power supply will fit in my computer correctly... When i play oblivion n stuff i get random system shutdowns so i need to get a new PSU..I am a newb at figuring this stuff out but here....http://www.newegg.com/Product/Product.aspx?Item=N82E16817189014and this is the site wer it says my systems specs...http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00757531%26lc=en%26cc=us%26dlc=en%26product=3245022%26lang=enPower suplly question to see if it fits my rigs specs
Good brand nice amps you should be ok but why did you get that with a pre-built psu it was bound to do that!Power suplly question to see if it fits my rigs specs
because i am a huge nub cake so hopefully now it wont just randomly reboot itself during oblivion and other games?
because i didnt know anything about anything wen i bought the computer n stuff
because i didnt know anything b4 i bougt the commputer
can someone else confirm that this is ok and will fit my computer good? i have the lil stock cases that comes witht hte a1600n and wana know if itll fit and if i have enough connectors for all my stuff
ljgd